American English

American English, or United States (U.S.) English, is the set of dialects of the English language native to the United States. English is the most widely spoken language in the United States and is the common language used by the federal government, considered the de facto language of the country because of its widespread use. English has been given official status by 30 of the 50 state governments. As an example, while both Spanish and English have equivalent status in the local courts of the Commonwealth of Puerto Rico, under federal law, English is the official language for any matters being referred to the United States District Court for the territory.

The use of English in the United States is a result of British colonization. The first wave of English-speaking settlers arrived in North America during the 17th century, followed by further migrations in the 18th and 19th centuries. Since then, American English has been influenced by the languages of West Africa, the Native American population, German, Dutch, Irish, Spanish, and other languages of successive waves of immigrants to the United States.

Learning

Learning is the act of acquiring new, or modifying and reinforcing, existing knowledge, behaviors, skills, values, or preferences and may involve synthesizing different types of information. The ability to learn is possessed by humans, animals, plants and some machines. Progress over time tends to follow a learning curve. It does not happen all at once, but builds upon and is shaped by previous knowledge. To that end, learning may be viewed as a process, rather than a collection of factual and procedural knowledge. Learning produces changes in the organism and the changes produced are relatively permanent.